Ventilating device



Sept. 30, 1924. 4

E. J. KRUEGER VENTILATING DEVICE Filed May 1921 2 Sheets-Sheet 1 I NV EN TOR.

Edward LEG-112921"... BY

A TTORNEY.

Sept. 30 1924. 1,509,957

. E. J. KRUEGER VENTILATING DEVICE Filed May 6 1.921 2 Sheets-Sheet 2 INVENTOR. -Efiward J-Krueger o wk A ORNEY.

Patented Sept. 30, 1924;.

UNITED STATES PATENT OFFICE.

EDWARD J. KRUEGER, F MELVJAUKEE, WISCONSIN.

VENTILATI'NG DEVICE.

Application filed May 6,

' To all to]: am it may concern Be it known that I, EDWARD J. KRUEGER, a citizen of the United States, and resident of Milwaukee, in the county of l lih waukee and State of Wisconsin, have in vented new and useful Improvements in Ventilating Devices, of which the following is a description, reference being had to the accompanying drawings, which are a part if) of this specification.

This invention relates to certain new and useful improvements in ventilators and re fers more particularly to a device adapted to be placed at the discharge end of a shaft to create a suction at the mouth thereof.

Many various types devices of this class have been designed, all of which have been more or less open to objection, in that they do not create sufficient suction at the mouth of the shaft with which they have been employed, that the elements have been permitted to enter the mouth of the shaft, and that the cost of production has been too great to reduce the same to a commercial success. 7

Hence, with the above and other objections in mind this invention has for a broad general object to provide a device of the type described in which a maximum suction is procured at the mouth of the shaft, the shaft mouth being protected, from the entrance thereto, of the elements, and the device being capable of production at a cost whereby its full commercial value may be obtained.

Another object of this invention is to provide a device of the class described, in which the vanes are secured to upper and lower carrying members by welding or spot-welding, whereby a strong fuse connection is obtained.

A further object of this invention is to provide a novel manner of journaling the vane carrying shaft, whereby its bearing may be adjusted and at the same time properly supplied with lubricant to eliminate the necessity of constant examination thereof.

A still further object of this invention is to provide a device of the class described in which each. vane is formed from a sheet of metal of the same width throughout its length and which is provided with a gutter to deflect moisture gathering thereon below the mouth of the air shaft and which ormed at an allele whe e y he martv 1921. Serial No. MY/$85.

mum effect of air currents thereon may be procured.

Viith the above and other objects in View which will appear as the description proceeds, my invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly defined by the appended claims, it being understood that such changes in the precise embodiment of the hereindisclosed invention may be made as come within the scope of the claims.

In the accompanying drawings, 1 have il lustrated one complete example of the physical embodiment of my invention constructed according to the best mode I have so far devised for the practical application of the principles thereof, and in which:

Figure 1 is a view of the upper end of an air shaft equipped with my invention, parts thereof being in elevation, and parts broken away and in section and but two of the vanes being shown;

Figure 2 is a fragmentary sectional view taken transversely through the device on the plane of the line 2.2 of Figure 1.

Figure 3. is a fragmentary View looking down upon the means for supporting the upper ends of the vanes, said view being taken on the plane of line 3--8. of Figure 1.

Figure d is a fragmentary perspective view illustrating the manner of welding or spot-welding the upper ends of the vane to the upper ring member; and

Figure 5 is a fragmentary perspective view illustrating the manner of securing the lower ends of the vanes tothe lower ring member.

It will be readily appreciated by those skilled in the art to which an invention of this character appertains, that the same is adapted for adjustment to ventilating shafts, chimneys, or any other shaft where it is desired to create a draft. In the accompanying drawings aconventional.sl1aft 6 is illustrated, in the mouth of which is secured a spider bracket member 7, the fastening members 8 of which serve to secure socket members 9 to the outer opposite sides of said shaft, The socket members 9 receive the lower ends of broken arms 10, 1 high are preferably tubular and have upper ends flattened and securcdin chanu arms 11 a a w r w de brisket The spider T has a centrally bored upstanding projection 13, preferably in axial alinement with the axis of the shaft 6, and having positioned therein a counter sunk hardened bearing member 14, in which is engaged a hardenedtapered plug end of a rod 16. The upper end of the rod 16 is secured by suitable means to a coupling 17, the upper end of which is recessed or in the form of a socket 18 to receive a pintle 19. The pintle 19 is provided with exterior screw threads for adjustable engagement in a threaded opening 20 of the bracket 12 and said pintle is provided with a longitudinally extended passage 21 which communicates with'the interior of the socket 18 as at 22, the outer end of said passage-way communieating with a source of lubricant supply,

, which is illustrated in the'present embodiment in the form of a grease cup 23.

The coupling 17 is formed with an angu lar rib or flange 25 and has its portion thereabove exteriorly threaded as at 26 to receive a bindingnut 27, which nut is adapt ed to bind between it and said flange, a disc 28, to the outer end of which a ring 29 is secured by fastening means 30. Secured to the under side of the ring by the fastening 30, is the upper laterally flanged end 31 of an inverted frusto-conical member 32, the lower end of which is firmly secured to an anchor 33 by a binding nut 34-. The member 32 braces the vane structure and by reason of its shape prevents the formation of air' pockets and eddying currents in the space between the vanes. The lower end of said frusto-conical member terminates near the center of the space between the mouth of the shaft/*6 and the ring 29.

The ring 29 forms the means for carrying the upper ends of a plurality of vanes 35, the lower ends of which are secured to a band or ring 36 which surrounds the upper rim or mouthof the shaft 6. The ring 36 is maintained in a central position with respect to the shaft 6 by connecting wires or spokes 37 which have their inner ends made fast to a plate or washer 38 surrounding the rod 16. p 7

The vanes 35 are each formed by a single length of material of the same Width throughout with one longitudinal edge thereof folded upon itself as at 39 and its other longitudinal edge curved about a reinforcing or stiffening rod 40, which in effect produces a gutter fordirecting all moisture, that may engage the outer faces of the vanes, downwardly outside of the shaft mouth. The upper end of each vane is slightly cut away at one corner as at 41 and is curved or bent upwardly to provide means of attachment to the periphery of the ring 29 to which it is preferably secured by spot-welding, or the like. The lower end of each vane has one corner thereof bent in one direction at an angle as at 4-2, to provide means for permitting the attachment of the same to the band 36 by spot-wolding, the other corner thereof being struck outwardly as at 43 to receive a reinforcing wire 441;, which provides a factor of safety. The vanes may be further reinforced against centrifugal ac tion by a brace wire 44: which passes through the central portions of the vanes.

The vanes are each curved transversely throughout substantially their entire length, as best shown in Figure 2, and by reason of the angle at which the same is twisted, in being secured to the rings 20 and 36, they have their outer edges directed (nitwurdly to lie within the path of all. air currents. The cut away portion 41. at the upper end of each vane, permits the assembly thereof in over-lapped condition, as best shown in Figure 3, to prevent the entrance into the in-- terior of the device of any elements. The gutter formed by the portion formed thereon by stiffening wire 40, catches all moisture that strikes the outer side of each vauc and as before stated directs the same dowir wardly and outwardly of the mouth of shaft 6.

The hearing at the lower end of the rod. 16 is protected from dust, grit and other foreign matter by a hood 4-5, which has its upper end welded or otherwise secured to the washer 38. The upper end of the rod 16 is protected from the elements and the entrance of foreign matters thereto by an inverted bowl shaped member -16, which is carried by the bracket 12 and substantially entirely covers the upper portion of coupling 17.

What I claim as my invention is:

1. In a device of the class described, the combination with an air shaft, of means for creating a suction at the month of said shaft and comprising a spider member secured in said shaft near its mouth and having a re cess in axial alinement with the shaft. a bracket member disposed above the mouth of the shaft, said bracket member having a threaded bore in axial alinen'ient with the shaft, a pintle in threaded engagement with said bracket bore, a rod having its lower end journaled in the recess of said spider member, a socket: bearing member carried by the upper end of said rod for receiving the pintle, said pintle having a passage extending therethrough and communicating with the socket bearing member, a lubricant supply communicating with said passage, and vanes carried by said rod.

2. In a device of the class described, the combination with an air shaft, of means for creating a suction at the month of said shaft and comprising a bearing mounted in the mouth of said shaft, a bracket disposed above t ie mouth of said shaft, :1 pintle carried by said bracket in axial alinement with said bearing, a rod having its lower end journaled in said bearing, socket member mounted on the upper end. of said rod, said pintle being engageable in the socket member to, with the bearing journally mount said rod, :1 flange projected from the side of said socket member the exterior portion of the socket member above said flange being threaded, a centrally bored disc adapted to be supported on said flange, a binding nut engageable with said threads to secure the disc firm against said flange, and vanes having their upper ends supported from said disc.

3. In a device of the class described, the combination with an air shaft, of means for creating a suction at the mouthof said shaft and comprising a bearing mounted in the mouth of said shaft, a bracket disposed above the mouth of said shaft, a nintle carried by said bracket in axial alinement with said bearing, a rod having its lower end journaled in said bearing, a socket member mounted on the upper end of said rod, said pintle being engageable in the socket member to, with the bearing, journally mount said rod, a flange projected from the side of said socket member, the exterior portion of the socket member above said flange being threaded, a centrally bored disc adapted to be supported on said flange, a binding nut engageable with said threads to secure the disc firm against said flange, a ring mem her, a cone member surrounding the upper portion of the rod and having its upper larger end laterally flanged for engagement with said ring member, means for securing said ring member and cone member to said disc, means for securing the lower end of said cone member to said rod, and vanes having their upper ends secured to said ring member.

In testimony whereof, I afiix my signature.

EDWARD KRUEGER. 

